The Houthis’ shock advance and what it means for the world

The Houthis now control the Bab al-Mandab strait. But where is it and why does it matter? Patrick Wintour explains. Help support our independent journalism at theguardian.com/infocus

The German chancellor, Friedrich Merz, has vowed to stay in office despite heavy losses in two state elections that he described as a ‘disaster’. The anti-immigration, Kremlin-friendly Alternative für Deutschland won with 38% of the vote in Mecklenburg-Western Pomerania, while the leftwing Die Linke was victorious in Berlin. Merz has promised political change, but speculation is growing that his party could soon oust him. Lucy Hough speaks to the Guardian’s Berlin correspondent, Deborah Cole – watch on YouTube. Help support our independent journalism at theguardian.com/infocus

From hospital wards to bathrooms, where is a transgender person supposed to go after the latest equalities guidance?. Help support our independent journalism at theguardian.com/infocus

Buckingham Palace has issued a rare, and strong, rebuttal to claims made in Earl Spencer’s memoir Swan Song. The book claims that King Charles told Spencer days after Diana’s death and during a heated row over funeral arrangements: ‘Rest assured, we’ll forget her soon enough.’ Lucy Hough speaks to the Guardian’s senior national news editor, Aaron Sharp. Help support our independent journalism at theguardian.com/infocus

Can you have a happy, healthy relationship of three? Today in Focus hears about good and bad throupling experiences. With reporting from Kitty Drake. Help support our independent journalism at theguardian.com/infocus

Canadian prime minister, Mark Carney, has welcomed the EU’s proposal for Canada to become the bloc’s first ‘associate member’, despite threats from Donald Trump over the plan. The US president said Washington could impose ‘very serious tariffs’ or halt trade if the EU went ahead with the idea. But in a defiant speech to the European parliament, Carney called for ‘deep cooperation’ and said polling showed the overwhelming majority of Canadians supported closer ties with Europe. Lucy Hough speaks to Europe correspondent Jon Henley – watch on YouTube. Help support our independent journalism at theguardian.com/infocus

The Swedish journalist Martin Gelin tells Helen Pidd about the impact the far right has had on Sweden’s politics over the last four years – and what the latest general election results could mean for the Nordic country’s future. Help support our independent journalism at theguardian.com/infocus

All four supporting acts for the upcoming dates of Ed Sheeran’s tour have withdrawn in solidarity with fellow opener Macklemore. The American rapper was removed from Sheeran’s tour after comments made onstage in support of Palestine. Sheeran responded that venue owners – including Robert Kraft who owns the New England Patriots and its home stadium – had objected to Macklemore’s appearance on the tour. But after he had tried to negotiate with the venue owners “at length to build bridges,” ultimately the promoters made the decision to pull the plug. Artists who have pulled out include Finneas, Aaron Rowe and Beoga. Lucy Hough speaks to Guardian assistant opinion editor Jason Okundaye – watch on YouTube. Help support our independent journalism at theguardian.com/infocus

At least five pupils at a village school in the West Bank have been killed in the last year by settlers and soldiers. Emma Graham-Harrison reports on how the school found itself on the frontline, while a teacher explains what life is like for staff and students.. Help support our independent journalism at theguardian.com/infocus

Three babies might have survived and others could have been protected if hospital staff had taken action over concerns about the nurse Lucy Letby, an inquiry has found. Lady Justice Thirlwall, who led the inquiry, found there was a ‘complete failure to protect babies on the neonatal unit’ at the Countess of Chester hospital. Letby is serving 15 whole-life prison terms for murdering seven babies and attempting to murder seven more. The former neonatal nurse says she is innocent and is fighting to overturn her convictions. Nosheen Iqbal speaks to the Guardian’s north of England editor, Josh Halliday. Help support our independent journalism at theguardian.com/infocus